Combined type multi-stage treatment harmful gas purification device

Abstract

The invention relates to the technical field of harmful gas purification, in particular to a combined multi-stage treatment harmful gas purification device which comprises a base and further comprises a purification assembly, and the purification assembly comprises a first purification tank, a second purification tank and a third purification tank which are fixedly mounted at the top of the base; a third partition plate is fixedly mounted on the inner wall of the third purification tank, the top of the third partition plate is rotationally connected with a rotating partition frame, the upper portion of the third partition plate is vertically divided into a plurality of partition areas through the rotating partition frame, and the partition areas are transversely divided into a plurality of purification layers. The purification work of harmful gas is distributed to different treatment stages, the adsorption burden of activated carbon in the third purification tank is reduced, the activated carbon in the third purification tank can work within the optimal performance range of the activated carbon, the higher overall purification effect is achieved, a new adsorbent layer can be replaced by driving a rotating separation frame to rotate, and the cost is reduced. The frequency of replacing the adsorbent after shutdown is reduced, and the treatment period of the system is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of harmful gas purification, and in particular to a combined multi-stage treatment harmful gas purification device. Background Art

[0002] Laboratories usually conduct various chemical experiments, many of which may produce harmful gases, such as toxic gases (such as ammonia, chlorine, etc.), corrosive gases and flammable gases. In the work of the pathology department, harmful gases not only come from the experimental process, but also from xylene and formaldehyde reagents used in daily work. These harmful gases leak or have high concentrations, which will pose a serious threat to the health of the staff and even cause poisoning, respiratory damage or other acute reactions. Harmful gas purification devices can effectively remove or reduce the concentration of harmful gases, ensure the air quality of the working environment, and reduce the health hazards of toxic gases to the staff.

[0003] At present, traditional harmful gas purification devices have the following shortcomings. Most laboratory gas purification devices (such as activated carbon adsorbers) use a single adsorbent (activated carbon) for adsorption, which results in excessive adsorption load of activated carbon and shortened service life. Although it can process a certain amount of gas in a short time, its adsorption capacity is limited. As the use time increases, the purification efficiency will gradually decrease. The high concentration of pollutants in toxic gases will accelerate the saturation of the equipment, resulting in a significant reduction in the purification effect. At the same time, it also increases the frequency of replacing the adsorbent, prolongs the system's processing cycle, affects the continuity of the overall gas purification, and causes the instability of the purification efficiency, making the equipment less practical. Summary of the invention

[0004] The purpose of the present invention is to solve the problem of poor practicability of the equipment in the prior art, and to propose a combined multi-stage treatment harmful gas purification device.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a combined multi-stage treatment harmful gas purification device, including a base, and also including: A purification assembly, the purification assembly comprising a first purification tank, a second purification tank and a third purification tank fixedly mounted on the top of the base, the first purification tank being connected to an air inlet assembly, the top of the first purification tank being fixedly connected to the second purification tank by a first gas pipe, the top of the second purification tank being fixedly connected to the third purification tank by a second gas pipe, and the top of the third purification tank being fixedly connected to an air outlet pipe; A third partition is fixedly installed on the inner wall of the third purification tank, the second gas pipe penetrates the third partition and is connected with the upper part thereof, and the second gas pipe is fixedly connected to the third partition, the top of the third partition is rotatably connected with a rotating partition frame, a third motor is fixedly installed on the bottom of the inner wall of the third purification tank, the output end of the third motor is fixedly connected to the rotating partition frame, the rotating partition frame divides the upper part of the third partition into a plurality of partition areas vertically, and the partition areas are horizontally divided into a plurality of purification layers, and the purification layers are filled with solid adsorbent; The tops of the inner walls of the first purification tank, the second purification tank and the third purification tank are respectively provided with sensors for detecting the content of harmful substances.

[0006] Preferably, a first partition is fixedly installed on the inner wall of the first purification tank, a stirring tube is rotatably connected to the top of the first partition, a cylindrical block is fixedly installed at the bottom center of the inner wall of the first purification tank, the cylindrical block passes through the first partition and is fixedly connected to the first partition, the inner wall of the stirring tube is sealed and rotatably connected to the outer wall of the cylindrical block, a gas groove is provided in the cylindrical block, a plurality of exhaust holes are provided on the top of the cylindrical block, and an electromagnetic valve is provided in the exhaust hole, the plurality of exhaust holes are connected to the gas groove, the top of the first partition is filled with an adsorbent, and the adsorbent is distributed inside and outside the stirring tube.

[0007] Preferably, the air intake assembly includes an air pump fixedly mounted on the top of the base, the air pump is fixedly connected to the first purification tank via an air intake pipe, an electric control valve is provided in the air intake pipe, the air intake pipe is fixedly connected to the cylindrical block and is connected to the gas tank.

[0008] Preferably, a dispersion component is provided in the first purification tank, and the dispersion component includes a plurality of dispersion blocks fixedly installed on the bottom of the inner wall of the first purification tank, the plurality of dispersion blocks penetrate the first partition and are fixedly connected to the first partition, the plurality of dispersion blocks are distributed in a circular array on the outer wall of the stirring tube and are rotatably connected to the stirring tube, the plurality of dispersion blocks are all fixedly connected to the first cylindrical block, the plurality of dispersion blocks are respectively provided with dispersion grooves, and the dispersion grooves are connected to the gas grooves, the top of the dispersion blocks are provided with a plurality of dispersion holes, and the dispersion holes are connected to the dispersion grooves, and the plurality of dispersion holes are provided with solenoid valves.

[0009] Preferably, a driven gear is fixedly installed on the outer wall of the stirring tube, and the driven gear is rotatably connected to the inside of the first partition. A first motor is fixedly installed in the first partition, and a driving gear is fixedly connected to the output end of the first motor. The driving gear is meshed with the driven gear, and a stirring block is provided on the outer wall of the stirring tube.

[0010] Preferably, a condensation assembly is provided in the first purification tank, and the condensation assembly includes a condensation plate fixedly mounted on the inner wall of the first purification tank, the condensation plate is located above the stirring tube, and a plurality of condensation grooves are penetrated through the condensation plate.

[0011] Preferably, the plurality of condensation grooves are distributed in circles from the center of the condensation plate to the periphery, and an annular heat-conducting block is arranged between two adjacent circles of condensation grooves, the heat-conducting block is fixedly mounted on the condensation plate, the top of the condensation plate is fixedly connected to a heat insulation plate through an electric push rod, a plurality of semiconductor refrigeration plates are fixedly mounted on the heat insulation plate, the plurality of semiconductor refrigeration plates are radially distributed on the heat insulation plate and correspond to the heat-conducting blocks, the plurality of condensation grooves are respectively slidably connected to scraper tubes, the scraper tubes pass through the heat insulation plate and are fixedly connected to the heat insulation plate.

[0012] Preferably, a second partition is fixedly installed on the inner wall of the second purification tank, the second purification tank is filled with adsorbent, and the adsorbent is located above the second partition, a fixing column is fixedly installed on the top of the second partition, the first gas pipe penetrates the second partition upward and is fixedly connected to the fixing column, and a plurality of gas outlet grooves are provided on the outer wall of the fixing column, and the gas outlet grooves are connected to the first gas pipe.

[0013] Preferably, a dispersion cone is provided on the top of the fixed column, a liquid storage tank is fixedly installed on the top of the base, a water pump is fixedly installed on the outer wall of the second purification tank, the liquid storage tank and the water pump are fixedly connected by a water pipe, the water pump and the second purification tank are fixedly connected by a replenishing pipe, and the drain outlet of the replenishing pipe is located directly above the dispersion cone.

[0014] Preferably, a guide ring is fixedly installed on the upper side wall of the fixed column, the dispersion cone is rotatably and slidably connected to the fixed column, the bottom of the dispersion cone is in contact with the top of the guide ring, the bottom end of the dispersion cone and the top end of the guide ring are both irregular curved surfaces, a second motor is fixedly installed inside the fixed column, a clamping block is fixedly connected to the output end of the second motor, a clamping groove is provided inside the dispersion cone, and the clamping block is clamped and slidably connected to the clamping groove.

[0015] Compared with the prior art, the advantages of the present invention are: 1. The present invention performs two-step purification treatment on the toxic gas and then passes it into the third purification tank. Anhydrous ethanol and water effectively remove some alcohol-soluble gases and water-soluble gases, reducing the adsorption burden of these components on activated carbon, so that the activated carbon can focus on adsorbing the remaining harmful gases, thereby delaying the saturation of the activated carbon and extending its service life. The purification work of the harmful gas is more efficiently allocated to different treatment stages, so that the activated carbon can work within its optimal performance range, and finally achieve a higher overall purification effect.

[0016] 2. The present invention divides the third purification tank into multiple partitions by setting a rotating partition frame. When the adsorbent in a certain partition is saturated with adsorption, the different partitions are rotated into the path of the purified gas by driving the rotating partition frame, so that new adsorbent layers are used, avoiding the adsorbent saturation in a certain partition, which leads to reduced purification efficiency. Each partition is provided with multiple purification layers, and each purification layer is filled with different types of solid adsorbents. Targeted purification is carried out for different types of harmful substances, thereby improving the system's processing capacity for complex pollutants, more efficiently removing different types of harmful substances, ensuring that the purified gas is purer, reducing the frequency of shutdown for replacing adsorbents, extending the system's processing cycle, ensuring the continuity of the overall gas purification, and making the purification efficiency more stable.

[0017] 3. The present invention provides a stirring tube and other devices to first pass harmful gases into the stirring tube for purification. When the sensor detects an increase in the content of harmful gases, it indicates that the adsorbent in the stirring tube tends to be saturated and the adsorption effect begins to decline. At this time, the solenoid valve in the exhaust hole is closed, and the gas changes its flow path and enters the adsorbent outside the stirring tube through the dispersion holes for purification. The concentration of harmful gases is detected in real time, and the purification path is automatically switched when the adsorbent is saturated, thereby ensuring the continuous and stable operation of the system and effectively avoiding the risk of leakage of harmful gases. The purification strategy can be adjusted in real time according to the change in the concentration of harmful gases to ensure that the purification effect is always maintained in the optimal state. At the same time, the frequency of replacing the adsorbent is reduced, and the purification efficiency is improved. In addition, through the dispersion of the dispersion holes and the stirring of the stirring block, the anhydrous ethanol can react evenly with the harmful gas, thereby more efficiently removing harmful substances and enhancing the purification effect.

[0018] 4. The present invention provides devices such as heat conduction blocks and condensation plates. The semiconductor refrigeration plate helps to reduce the temperature around the condensation tank to below room temperature by lowering the temperature at the bottom of the insulation plate, thereby accelerating the condensation process of ethanol. The scraper tube continuously moves up and down to scrape off the liquid droplets in the condensation tank to ensure that the condensate does not stay in the condensation tank for too long or flow away too quickly, effectively avoiding the accumulation of ethanol in the condensation tank and ensuring that the condensate falls in time, thereby reducing the loss of ethanol due to volatilization or evaporation due to long-term retention, helping to extend the use time of ethanol and improve the overall operating efficiency of the equipment, maintaining the concentration of ethanol, and avoiding too low concentration leading to reduced purification efficiency.

[0019] 5. The present invention sets a dispersion cone and other devices. When the sensor detects an increase in the content of harmful substances, the water pump starts to draw water from the liquid storage tank and replenish the water into the second purification tank through the replenishing pipe. The water discharged from the replenishing pipe falls onto the dispersion cone. The rotation and lifting movement of the dispersion cone can disperse the liquid in a larger range and more evenly, so that the aqueous solution is more evenly dispersed in the space above the liquid surface, which helps the water to contact the gas above the liquid surface more fully and dissolve the water-soluble harmful substances, thereby improving the adsorption and dissolution efficiency of the harmful substances, automatically replenishing the water source, maintaining the cleanliness and adsorption performance of the liquid, and avoiding affecting the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a combined multi-stage harmful gas purification device proposed by the present invention.

[0021] Figure 2 This is a schematic structural diagram from another perspective of a combined multi-stage harmful gas purification device proposed by the present invention.

[0022] Figure 3 This is a schematic diagram of the internal structure of the first purification tank of a combined multi-stage harmful gas purification device proposed by the present invention.

[0023] Figure 4 This is a schematic diagram of the internal structure of a condensation plate of a combined multi-stage harmful gas purification device proposed by the present invention.

[0024] Figure 5 This is a schematic structural diagram of the first baffle portion of a combined multi-stage harmful gas purification device proposed by the present invention.

[0025] Figure 6 This is a schematic diagram of the structure of the stirring tube portion of a combined multi-stage harmful gas purification device proposed by the present invention.

[0026] Figure 7 This is a schematic diagram of the cylindrical block structure of a combined multi-stage harmful gas purification device proposed by the present invention.

[0027] Figure 8 This is a schematic diagram of the internal structure of a dispersion block of a combined multi-stage harmful gas purification device proposed by the present invention.

[0028] Fig. 9 This is a schematic diagram of the internal structure of the second purification tank of a combined multi-stage harmful gas purification device proposed by the present invention.

[0029] Fig.10 This is a schematic diagram of the internal structure of a fixed column of a combined multi-stage harmful gas purification device proposed by the present invention.

[0030] Fig.11 This is a schematic diagram of the internal structure of the third purification tank of the combined multi-stage harmful gas purification device proposed by the present invention.

[0031] In the figure: 1 base, 2 vacuum pump, 3 first purification tank, 4 second purification tank, 5 third purification tank, 6 first gas pipe, 7 second gas pipe, 8 outlet pipe, 9 liquid storage tank, 10 condensation plate, 11 condensation tank, 12 heat conduction block, 13 insulation board, 14 scraper tube, 15 semiconductor refrigeration plate, 16 first partition, 17 dispersion block, 171 dispersion tank, 18 stirring tube, 181 driven gear, 182 driving gear, 19 cylindrical block, 191 gas tank, 20 second partition, 21 fixed column, 211 outlet tank, 22 guide ring, 23 dispersion cone, 231 clamping groove, 24 clamping block, 25 water pump, 251 replenishing pipe, 26 third partition, 27 rotating partition frame. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figures 1 to 11, a combined multi-stage treatment harmful gas purification device, including a base 1, the bottom of the base 1 is provided with rollers, which can easily move the purification device to the corresponding position, so that it can be flexibly adapted to a variety of usage scenarios, and at the same time it is helpful to move to a local high-concentration pollution area, and carry out efficient purification operations in the area in a targeted manner. The device can also be easily moved to an open and easy-to-operate space, which is convenient for staff to carry out comprehensive maintenance of various parts of the device without the need to laboriously dismantle or move other surrounding equipment to free up operating space. A first purification tank 3, a second purification tank 4 and a third purification tank 5 are fixedly installed on the top of the base 1. The side walls of the first purification tank 3 and the second purification tank 4 are fixedly connected with a sewage pipe, and a control valve is arranged in the sewage pipe. The side wall of the third purification tank 5 is provided with a sealing door, and the sealing door is opened for cleaning or replacing the internal adsorbent. The second purification tank 4 is located between the first purification tank 3 and the third purification tank 5. An air pump 2 is fixedly installed on the top of the base 1 , the air pump 2 is fixedly connected to the first purification tank 3 with an air inlet pipe, an electric control valve is arranged in the air inlet pipe, the air extraction end of the air pump 2 is used to connect an external waste gas transport pipe or an air extraction funnel, and the air pump 2 works to extract harmful gases into the first purification tank 3, the top of the first purification tank 3 is fixedly connected to the second purification tank 4 with a first gas pipe 6, the top of the second purification tank 4 is fixedly connected to the third purification tank 5 with a second gas pipe 7, and the top of the third purification tank 5 is fixedly connected to an air outlet pipe 8. The first purification tank 3 is filled with anhydrous ethanol as an adsorbent, and the second purification tank 4 is filled with water as an adsorbent. Harmful gases enter the first purification tank 3, the second purification tank 4 and the third purification tank 5 in turn for purification treatment, and are finally discharged from the air outlet pipe 8. Sensors (not shown in the figure) are respectively arranged on the tops of the inner walls of the first purification tank 3, the second purification tank 4 and the third purification tank 5 for detecting the content of harmful substances. When the detection data increases, it means that the absorption of harmful gases by the adsorbent in the purification tank is gradually saturated.

[0034] A cylindrical block 19 is fixedly installed at the center of the bottom of the inner wall of the first purification tank 3, a first partition 16 is fixedly installed on the inner wall of the first purification tank 3, the cylindrical block 19 penetrates the first partition 16 and is fixedly connected to the first partition 16, a stirring tube 18 is sealed and rotatably connected to the top of the first partition 16, the inner wall of the stirring tube 18 is sealed and rotatably connected to the outer wall of the cylindrical block 19, a gas groove 191 is arranged in the first cylindrical block 19, an air inlet pipe is connected to the gas groove 191, a plurality of exhaust holes are arranged on the top of the cylindrical block 19, and a solenoid valve is arranged in the exhaust hole, and the plurality of exhaust holes are all connected to the gas groove 191, a driven gear 181 is fixedly installed on the outer wall of the stirring tube 18, and the driven gear 181 is rotatably connected in the first partition 16, A first motor is fixedly installed in the first partition 16, and a driving gear 182 is fixedly connected to the output end of the first motor, and the driving gear 182 is meshed with the driven gear 181. The top of the first partition 16 is filled with anhydrous ethanol, and the anhydrous ethanol is distributed inside and outside the stirring tube 18. The liquid level in the stirring tube 18 is higher than the external liquid level of the stirring tube 18, ensuring that the harmful gas can fully contact with the anhydrous ethanol when passing through the stirring tube 18, so as to more effectively absorb the alcohol-soluble harmful substances. The side wall of the first purification tank 3 is fixedly connected with a liquid inlet pipe, and a three-way valve is provided on the side wall of the liquid inlet pipe. The two discharge ports of the liquid inlet pipe correspond to the inside and outside of the stirring tube 18 respectively, and the three-way valve is used to control the discharge of the discharge port. The first purification tank 3 A plurality of dispersion blocks 17 are fixedly installed at the bottom of the inner wall, the plurality of dispersion blocks 17 penetrate the first baffle 16 and are fixedly connected to the first baffle 16, the plurality of dispersion blocks 17 are distributed in a circumferential array on the outer wall of the stirring tube 18 and are rotatably connected to the stirring tube 18, the plurality of dispersion blocks 17 are fixedly connected to the first cylindrical block 19, the plurality of dispersion blocks 17 are respectively provided with dispersion grooves 171, and the dispersion grooves 171 are communicated with the gas groove 191, the top of the dispersion block 17 is provided with a plurality of dispersion holes, and the dispersion holes are communicated with the dispersion groove 171, and the plurality of dispersion holes are provided with electromagnetic valves, and the electromagnetic valves in the dispersion holes are closed, and harmful gases enter the exhaust holes from the gas groove 191, and enter the stirring tube 18 from the exhaust holes, and harmful alcohol-soluble substances are discharged without The water-soluble ethanol is fully absorbed. When the sensor in the first purification tank 3 detects an increase in the content of harmful substances, the solenoid valve in the exhaust hole is controlled to close, and the solenoid valve in the dispersion hole is opened. The gas enters the dispersion groove 171 from the gas groove 191, and then enters the top of the first partition plate 16 from the dispersion hole, and fully contacts with the anhydrous ethanol outside the stirring tube 18. The driving gear 182 drives the driven gear 181 to drive the stirring tube 18 to rotate. A stirring block is fixedly installed on the outer wall of the stirring tube 18. The stirring block stirs the external anhydrous ethanol during rotation to promote its mixing and contact with harmful gases, thereby enhancing the purification effect. This dynamic stirring method not only improves the purification efficiency, but also makes the entire purification process more uniform and stable.

[0035] A condensation plate 10 is fixedly installed on the inner wall of the first purification tank 3. The condensation plate 10 is located above the stirring tube 18. The top of the condensation plate 10 is fixedly connected to a heat insulation plate 13 through an electric push rod. The heat insulation plate 13 is slidably connected to the inner wall of the first purification tank 3. A plurality of condensation grooves 11 are penetrated through the condensation plate 10. The plurality of condensation grooves 11 are distributed in circles from the center of the condensation plate 10 to the periphery. An annular heat conduction block 12 is arranged between two adjacent circles of condensation grooves 11. The heat conduction block 12 is fixedly installed on the condensation plate 10 to ensure that the temperature of the condensation plate 10 is evenly distributed to avoid unstable condensation effect due to excessive temperature difference, thereby improving the condensation effect of the entire system. The plurality of condensation grooves 11 are slidably connected to scraper tubes 14 respectively. The scraper tubes 14 penetrate the heat insulation plate 13 and are fixedly connected to the heat insulation plate 13. A plurality of semiconductor refrigeration sheets 15 are radially distributed on the insulation board 13 and correspond to the heat conductive block 12. The semiconductor refrigeration sheets 15 reduce the bottom temperature of the insulation board 13. The electric push rod drives the insulation board 13 to reciprocate up and down. The insulation board 13 descends and contacts the heat conductive block 12, so that the temperature around the condensation tank 11 is reduced to below room temperature. Bubbles of anhydrous ethanol continuously emerge from the bottom. Ethanol is easy to volatilize. The ethanol volatilized in the first purification tank 3 condenses into liquid droplets hanging on the wall of the condensation tank 11 when passing through the condensation tank 11 with a low temperature. The scraper tube 14 follows the insulation board 13 to continuously move up and down, scrapes off the liquid droplets in the condensation tank 11, and makes them fall, ensuring that the condensate does not stay in the condensation tank 11 for too long or flow away too quickly, thereby effectively maintaining the concentration of ethanol and avoiding rapid volatilization or waste of ethanol.

[0036] A second partition 20 is fixedly installed on the inner wall of the second purification tank 4, a fixed column 21 is fixedly installed on the top of the second partition 20, the first gas pipe 6 penetrates the second partition 20 upward and is fixedly connected with the fixed column 21, a plurality of gas outlet grooves 211 are arranged on the outer wall of the fixed column 21, the gas outlet grooves 211 are connected with the first gas pipe 6, the adsorbent is located above the second partition 20, a guide ring 22 is fixedly installed on the upper end side wall of the fixed column 21, a dispersion cone 23 is slidably and rotatably connected to the top of the fixed column 21, the bottom of the dispersion cone 23 is in contact with the top of the guide ring 22, and the end where the dispersion cone 23 and the guide ring 22 contact each other is an irregular curved surface (such as Fig. 9As shown in the figure, a second motor is fixedly installed inside the fixed column 21, and a clamping block 24 is fixedly connected to the output end of the second motor. A clamping groove 231 is arranged inside the dispersion cone 23, and the clamping block 24 is clamped and slidably connected with the clamping groove 231 to prevent the dispersion cone 23 from being separated from the clamping block 24. A liquid storage tank 9 is fixedly installed on the top of the base 1, and a water pump 25 is fixedly installed on the outer wall of the second purification tank 4. The liquid storage tank 9 and the water pump 25 are fixedly connected with a water pipe, and the water pump 25 and the second purification tank 4 are fixedly connected with a supplementary pipe 251, and the drain port of the supplementary pipe 251 is located directly above the dispersion cone 23. The gas purified by the first purification tank 3 enters the bottom of the second purification tank 4 through the first gas pipe 6, and is discharged from a plurality of gas outlet grooves 211 on the fixed column 21. The water in the second purification tank 4 absorbs water-soluble harmful substances in the harmful gas. When the sensor on the top of the second purification tank 4 detects that the content of harmful substances increases, the water pump 25 is controlled to pump water from the liquid storage tank 9, and the replenishing pipe 251 discharges new water to the dispersion cone 23. The second motor is started, and the clamping block 24 drives the dispersion cone 23 to rotate. During the rotation of the dispersion cone 23, it is affected by the guide ring 22, so that the dispersion cone 23 is continuously raised and lowered while rotating. The combined movement of rotation and lifting allows the water discharged from the replenishing pipe 251 to be more evenly broken up by the dispersion cone 23 and dispersed into the space above the liquid surface, thereby enhancing the dispersion effect of the liquid. At the same time, the continuous replenishment of new water also promotes the dissolution of harmful substances and the renewal of adsorbents in the space above the liquid surface, further improving the purification effect.

[0037] A third motor is fixedly installed on the bottom of the inner wall of the third purification tank 5, and a third partition 26 is fixedly installed on the inner wall of the third purification tank 5. The top of the third partition 26 is rotatably connected to a rotating partition frame 27, and the output end of the third motor is fixedly connected to the rotating partition frame 27. The second gas pipe 7 passes through the third partition 26 upward and is fixedly connected to the third partition 26. The rotating partition frame 27 divides the upper part of the third partition 26 into multiple partition areas vertically, and the partition areas are horizontally divided into multiple purification layers. The multiple purification layers are filled with different types of solid adsorbents from bottom to top, such as modified activated carbon loaded with potassium permanganate, coal gasification waste residue-based activated carbon, and photocatalyst activated carbon (photocatalyst activated carbon is a composite material combining photocatalyst material and activated carbon, which is commonly used in air purification, water treatment, and environmental pollution control. The modified activated carbon loaded with potassium permanganate is mainly used for adsorbing formaldehyde, coal The gasified waste residue-based activated carbon is mainly used for adsorbing xylene, and different adsorbents are used in a targeted manner to improve the purification effect. Different adsorbents have different adsorption characteristics at each level, and can more efficiently remove various residual harmful substances, ensuring that the purified gas is purer and meets higher emission or use standards. The gas purified by the second purification tank 4 is transported to the third purification tank 5 through the second gas pipe 7, and passes through the third partition plate 26 to enter the corresponding separation area to purify the residual harmful substances in the first two steps or the harmful substances that cannot be purified in the first two steps. The sensor on the top of the third purification tank 5 detects that the adsorption effect of the solid adsorbent is gradually saturated. When the content of harmful substances increases, the rotating partition frame 27 is driven to rotate, and the separation area is replaced for purification, ensuring that the use of the adsorbent is more efficient and avoiding the influence of the adsorbent on the purification effect after saturation, resulting in a decrease in purification efficiency.

[0038] In the present invention, the push base 1 is freely moved to a suitable position, and the first partition 16, the second partition 20 and the third partition 26 are fixed to the bottom of the first purification tank 3, the second purification tank 4 and the third purification tank 5 respectively. The first partition 16 and the second partition 20 are respectively filled with anhydrous ethanol and water as adsorbents. The gas to be purified is passed into them, and the water-soluble and alcohol-soluble harmful substances will be absorbed by the adsorbent. A rotating partition frame 27 is rotatably connected above the third partition 26, and the rotating partition frame 27 is filled with solid adsorbents, such as photocatalyst activated carbon, which is used to finally remove harmful substances.

[0039] The input end of the vacuum pump 2 can be freely connected to a funnel or directly connected to the exhaust gas transport pipe. The first partition 16 is sealed and rotatably connected to the stirring tube 18. The outside of the stirring tube 18 is fixedly connected to a driven gear 181. The driven gear 181 is meshed with the driving gear 182 inside the first partition 16. The interior of the first purification tank 3 is divided into two areas by the stirring tube 18 and the first partition 16. The inner wall of the stirring tube 18 is sealed and rotatably connected to a cylindrical block 19. Harmful gases pass through the vacuum pump 2. An electric control valve is installed in the air inlet pipe of the vacuum pump 2. It is opened only when the gas pressure is sufficient (when the water in the tank does not flow back). The harmful gases enter the gas groove 191 and emerge from the groove to form dispersed bubbles. The harmful alcohol-soluble substances are fully absorbed by anhydrous ethanol. Since the cross-sectional area of ​​the stirring tube 18 is small, the anhydrous ethanol liquid level inside can be set higher, thereby increasing the contact time between the gas and the liquid and improving the purification effect of harmful substances. When the sensor detects an increase in the content of harmful substances, it means that the adsorbent has gradually reached saturation in absorbing the harmful gas. If the original liquid is continued to be used, the adsorption effect will only get worse and worse. At this time, the solenoid valve in the dispersion hole is controlled to open, and the solenoid valve in the exhaust hole is closed. The harmful gas enters the dispersion tank 171 from the gas tank 191, and the gas emerges from the dispersion hole and contacts with the anhydrous ethanol outside the stirring tube 18 that has not yet been purified. The active gear 182 controls the rotation of the stirring tube 18, and the anhydrous ethanol outside the stirring tube 18 can further contact with the harmful gas to improve the adsorption effect.

[0040] The top of the condensing plate 10 controls the insulation plate 13 to continuously reciprocate through the electric push rod, and the semiconductor refrigeration plate 15 makes the temperature at the bottom of the insulation plate 13 reach a lower temperature, and as the insulation plate 13 rises and falls to contact the heat-conducting block 12, the temperature around the condensing tank 11 is significantly reduced to below room temperature, and bubbles of anhydrous ethanol continue to emerge from the bottom, which will make the originally volatile ethanol more volatile. The ethanol volatilized in the first purification tank 3 is condensed into liquid droplets hanging on the wall of the condensing tank 11 after passing through the condensing tank 11 with a lower temperature, and is continuously scraped off by the scraper tube 14, ensuring that the ethanol content will not be lost too quickly, thereby improving the adsorption effect of the adsorption liquid.

[0041] The gas purified by the first purification tank 3 is transported to the bottom of the second purification tank 4 through the first gas pipe 6, and is discharged from the multiple gas outlet grooves 211 on the fixed column 21, and the water inside the second purification tank 4 absorbs water-soluble harmful substances. When the sensor on the top of the second purification tank 4 detects that the content of harmful substances increases, it means that the adsorption is gradually approaching saturation, and the original adsorption capacity of the adsorbent decreases. More harmful substances can pass through the adsorbent. At this time, the water pump 25 is controlled to pump water from the inside of the liquid storage tank 9, and water is transported from the replenishing pipe 251 to the top of the dispersion cone 23. The third motor is started, so that the clamping block 24 drives the dispersion cone 23 to rotate. During the rotation of the dispersion cone 23, it is guided and restricted by the guide ring 22 and continuously rises and falls. The water that falls from the replenishing pipe 251 to the top of the dispersion cone 23 is continuously broken up and dispersed, filling more space above the liquid surface. While replenishing the adsorbent to improve the purification effect, it promotes the contact between harmful substances and the adsorbent in the space above the liquid surface, ensuring a continuous and efficient purification effect.

[0042] The gas purified by the second purification tank 4 is transported to the third purification tank 5 through the second gas pipe 7, and transported upward through the third partition 26. In the last step, tail gas absorption is performed to purify the residual harmful substances in the first two steps or the harmful substances that cannot be purified in the first two steps. When the sensor detects that the adsorption effect of the solid adsorbent has reached saturation, the rotating partition frame 27 is driven to rotate, and the partition area is replaced for gas treatment to ensure that the gas discharged from the outlet pipe 8 is fully purified gas.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined multi-stage harmful gas purification device, comprising a base (1), characterized in that: Also includes: A purification assembly, the purification assembly comprising a first purification tank (3), a second purification tank (4) and a third purification tank (5) fixedly mounted on the top of a base (1), the first purification tank 3 being connected to an air inlet assembly, the top of the first purification tank (3) being fixedly connected to the second purification tank (4) by a first gas pipe (6), the top of the second purification tank (4) being fixedly connected to the third purification tank (5) by a second gas pipe (7), and the top of the third purification tank (5) being fixedly connected to an air outlet pipe (8); A third partition (26) is fixedly mounted on the inner wall of the third purification tank (5); the second gas pipe (7) passes through the third partition (26) and is in communication with the upper part thereof; the second gas pipe (7) is fixedly connected to the third partition (26); the top of the third partition (26) is rotatably connected to a rotating partition frame (27); a third motor is fixedly mounted on the bottom of the inner wall of the third purification tank (5); the output end of the third motor is fixedly connected to the rotating partition frame (27); the rotating partition frame (27) vertically divides the upper part of the third partition (26) into a plurality of partition areas, and the partition areas are horizontally divided into a plurality of purification layers; the purification layers are filled with solid adsorbent; Sensors for detecting the content of harmful substances are respectively arranged on the top of the inner walls of the first purification tank (3), the second purification tank (4) and the third purification tank (5).

2. A combined multi-stage harmful gas purification device according to claim 1, characterized in that: A first partition (16) is fixedly mounted on the inner wall of the first purification tank (3), and a stirring tube (18) is rotatably connected to the top of the first partition (16). A cylindrical block (19) is fixedly mounted at the bottom center of the inner wall of the first purification tank (3), and the cylindrical block (19) penetrates the first partition (16) and is fixedly connected to the first partition (16). The inner wall of the stirring tube (18) is sealingly rotatably connected to the outer wall of the cylindrical block (19). A gas groove (191) is arranged in the cylindrical block (19), and a plurality of exhaust holes are arranged on the top of the cylindrical block (19), and an electromagnetic valve is arranged in the exhaust hole, and the plurality of exhaust holes are all connected to the gas groove (191). An adsorbent is filled above the first partition (16), and the adsorbent is distributed inside and outside the stirring tube (18).

3. A combined multi-stage harmful gas purification device according to claim 2, characterized in that: The air intake assembly comprises an air pump (2) fixedly mounted on the top of the base (1); the air pump (2) is fixedly connected to the first purification tank (3) via an air intake pipe; an electric control valve is arranged in the air intake pipe; the air intake pipe is fixedly connected to the cylindrical block (19) and is connected to the gas tank (191).

4. A combined multi-stage harmful gas purification device according to claim 2, characterized in that: The first purification tank 3 is provided with a dispersion assembly, the dispersion assembly comprising a plurality of dispersion blocks (17) fixedly mounted on the bottom of the inner wall of the first purification tank (3), the plurality of dispersion blocks (17) passing through the first partition plate (16) and being fixedly connected to the first partition plate (16), the plurality of dispersion blocks (17) being distributed in a circumferential array on the outer wall of the stirring tube (18) and being rotatably connected to the stirring tube (18), the plurality of dispersion blocks (17) being fixedly connected to the first cylindrical block (19), the plurality of dispersion blocks (17) being respectively provided with dispersion grooves (171), and the dispersion grooves (171) being connected to the gas groove (191), the top of the dispersion block (17) being provided with a plurality of dispersion holes, and the dispersion holes being connected to the dispersion grooves (171), and the plurality of dispersion holes being provided with solenoid valves.

5. A combined multi-stage harmful gas purification device according to claim 2, characterized in that: A driven gear (181) is fixedly mounted on the outer wall of the stirring tube (18), and the driven gear (181) is rotatably connected to the inside of the first partition (16). A first motor is fixedly mounted inside the first partition (16), and an output end of the first motor is fixedly connected to a driving gear (182), and the driving gear (182) meshes with the driven gear (181). A stirring block is arranged on the outer wall of the stirring tube (18).

6. A combined multi-stage harmful gas purification device according to claim 2, characterized in that: A condensation assembly is provided in the first purification tank 3, and the condensation assembly comprises a condensation plate (10) fixedly mounted on the inner wall of the first purification tank (3), the condensation plate (10) is located above the stirring tube (18), and a plurality of condensation grooves (11) are provided through the condensation plate (10).

7. A combined multi-stage harmful gas purification device according to claim 6, characterized in that: The plurality of condensation grooves (11) are distributed in circles from the center of the condensation plate (10) toward the periphery, and an annular heat-conducting block (12) is provided between two adjacent circles of condensation grooves (11). The heat-conducting block (12) is fixedly mounted on the condensation plate (10). The top of the condensation plate (10) is fixedly connected to a heat-insulating plate (13) via an electric push rod. The heat-insulating plate (13) is fixedly mounted with a plurality of semiconductor cooling sheets (15). The plurality of semiconductor cooling sheets (15) are radially distributed on the heat-insulating plate (13) and correspond to the heat-conducting block (12). The plurality of condensation grooves (11) are respectively slidably connected to scraper tubes (14). The scraper tubes (14) penetrate the heat-insulating plate (13) and are fixedly connected to the heat-insulating plate (13).

8. The combined multi-stage harmful gas purification device according to claim 1 is characterized in that: A second partition (20) is fixedly mounted on the inner wall of the second purification tank (4); the second purification tank (4) is filled with an adsorbent, and the adsorbent is located above the second partition (20); a fixing column (21) is fixedly mounted on the top of the second partition (20); the first gas pipe (6) passes through the second partition (20) upward and is fixedly connected to the fixing column (21); a plurality of gas outlet grooves (211) are provided on the outer wall of the fixing column (21), and the gas outlet grooves (211) are in communication with the first gas pipe (6).

9. A combined multi-stage harmful gas purification device according to claim 8, characterized in that: A dispersion cone (23) is arranged on the top of the fixed column (21), a liquid storage tank (9) is fixedly mounted on the top of the base (1), a water pump (25) is fixedly mounted on the outer wall of the second purification tank (4), the liquid storage tank (9) and the water pump (25) are fixedly connected via a water pipe, the water pump (25) and the second purification tank (4) are fixedly connected via a replenishing pipe (251), and a drainage port of the replenishing pipe (251) is located directly above the dispersion cone (23).

10. A combined multi-stage harmful gas purification device according to claim 9, characterized in that: A guide ring (22) is fixedly mounted on the upper side wall of the fixed column (21); the dispersion cone (23) is rotatably and slidably connected to the fixed column (21); the bottom of the dispersion cone (23) contacts the top of the guide ring (22); the bottom of the dispersion cone (23) and the top of the guide ring (22) are both irregular curved surfaces; a second motor is fixedly mounted inside the fixed column (21); a clamping block (24) is fixedly connected to the output end of the second motor; a clamping groove (231) is provided inside the dispersion cone (23); the clamping block (24) is clamped and slidably connected to the clamping groove (231).

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